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When power attacking with the blade, it sends out a horizontal or vertical energy blast that inflicts 30 points of damage, depending on the type of power attack used.

The energy wave can travel roughly 15 feet, and can even penetrate walls. It can also travel through multiple targets at once, doing damage to all of them.

A left, right, or backward power attack makes a horizontal wave, while forward or standing power attacks make a vertical wave. This energy wave travels in whichever direction the Dragonborn is facing, and is used to open the seal where the blade is found. Its enchantment gives it the longest range of any melee weapon.

The ranged attack of this weapon isn't particularly powerful, but is capable of staggering most foes it hits. The ranged attack will also hit any opponent the blade itself hits, making it one of the most useful and well-rounded two-handed swords available in Skyrim or Solstheim.

Because of its unique enchantment, the blade cannot be disenchanted at the arcane enchanter, nor can any other enchantments be applied, even if the Dragonborn possesses the necessary perks. The enchantment also prevents the use of Elemental Fury.

The energy wave projectiles cast by the power attack deal bonus damage to Zahkriisos but no one else. This can be verified with the CK and the scripts attached to the projectiles, though it is never mentioned in the game. This bonus damage (+30 or +50 depending on player level) is applied directly to Zahkriisos' health.

The bonus damage scales slightly with the player level (+30 if the player is below level 50 and +50 if the player is level 50 or above) and based on the way the script is designed (with more checks for player level being less than 30 and less than 70) may have been intended to scale even more.

The energy wave projectile cast from this weapon can be used to open the glowing orb pillars in the Soul Cairn

360 The power charge may not emit energy during the door puzzle (in order to leave the mines, the puzzle must be completed with the blades effect); thus, the door remains unopened and the Dragonborn will be stuck in the room. A potential fix is to restart the game.

PC 360 If one transforms into a Vampire Lord while wielding the blade, there is a chance that, after reverting to human form, the sword will no longer produce the energy blast it usually does. (Sheathed or in hand, this will happen once the Dragonborn attempts to produce the blast.) To fix this, drop the weapon and pick it back up.

PC 360 PS3 When placed in the weapon racks of the Enchanter's Tower in Lakeview Manor, the blade ascends through the wall (appearing higher than its original position with each load) until it disappears into the roof. The blade cannot be found outside once it penetrates the roof. Alternatively, it may fall on the floor upon re-entering the house.

PS3 Whilst over-encumbered, the energy blast will not activate.

360 The energy blast caused by the power attack can damage Miraak while in Ethereal Form. It is possible this can be used to fix the glitch that causes Miraak to become stuck or glitched during the fight. It is unknown if this is a glitch or a deliberate effect.

Sometimes, the blade's energy wave will lag when power swinging and will not send an energy wave at the end of the swing. Instead, it will wait a few seconds then be released.

When given to a follower, they may sheathe the blade as if it were a one-handed weapon. When the blade is drawn, the follower will appear as if holding an invisible two-handed weapon, while the image of the one-handed blade remains at their side.

The blade's projectile attack will cause the Chaurus Hunter added by the Dawnguard DLC to emerge from its chrysalis without breaking the destructible shell. The shell can still be broken by any normal attack afterwards, however.